CAOHC UPDATED ACTUAL TEST
QUESTIONS AND VERIFIED ANSWERS
BUNDLE
●● Number of workers at risk for hearing loss from exposure to
chemicals, solvents, and heavy metals
Answer: 9 million
●● acoustic calibration
Answer: A check of the audiometer required at least annually. not
conducted by the occupational hearing conservationist unless special
training has been completed
●● acoustic calibration system
Answer: Set of instruments that can measure sound outputs from an
audiometer and its earphones and confirm that the acoustic output of the
equipment meets requirements of established calibration standards
●● acoustic check
Answer: A term commonly used for checking the acoustic seal of an
earplug by cupping your hands firmly over the ears with the earplugs
inserted and then releasing. The acoustic check is most useful in the
presence of noise
,●● acoustic neuroma
Answer: Tumor of the eighth cranial nerve
●● acoustic trauma
Answer: Immediate, often permanent, hearing loss due to a very loud
event such as an explosion. Also called blast injury
●● action level (AL)
Answer: Time-weighted average exposure (85 dBA in the US) at which
employers must institute continuing, effective hearing conservation
programs
●● active hearing protection devices
Answer: Hearing protection devices that generate a signal that cancels
certain incoming sounds. Also called noise-cancelling hearing protectors
●● administrative control
Answer: Any administrative action, such as rotating workers to quiet
areas for a certain amount of time, to limit their overall exposure
●● adverse effect
Answer: Undesirable or detrimental side effect
,●● age correction
Answer: A calculated allowance for hearing loss due to age based on the
theroy that, because the worker aged between the baseline and annual
audiogram, a portion of the hearing loss was due to the natural aging
process
●● air-bone gap
Answer: The difference between the thresholds for hearing when the
tones are delivered by air conduction versus bone conduction
●● air-conduction
Answer: Sound energy travelling through the air into the ear canal, and
through the middle ear
●● ambient noise
Answer: Background sound pressure level at a specific location. Often
used as a reference level to study a new noise source. Also called
background noise
●● American Academy of Audiology (AAA)
Answer: A national professional organization that represents
audiologists. It provides professional development, research, and
increased public awareness of hearing and balance disorders
, ●● American Academy of Otolaryngology - Head and Neck Surgery
(AAO-HNS)
Answer: A national professional organization representing physician
specialists who treat the ear, nose, throat and related structures of the
head and neck
●● American Association of Occupational Health Nurses (AAOHN)
Answer: The professional organization for occupational and
environmental health nursing which provides for and delivers health and
safety programs and services to workers, worker populations and
community groups.
●● American Board of Audiology (ABA)
Answer: An autonomous organization dedicated to enhancing audiologic
services to the public by promulgating universally recognized standards
in professional practice
●● American College of Occupational and Environmental Medicine
(ACOEM)
Answer: A national professional organization representing physicians
and other healthcare professionals specializing in the field of
occupational and environmental medicine
●● American Conference of Governmental Industrial Hygienists
(ACGIH)
QUESTIONS AND VERIFIED ANSWERS
BUNDLE
●● Number of workers at risk for hearing loss from exposure to
chemicals, solvents, and heavy metals
Answer: 9 million
●● acoustic calibration
Answer: A check of the audiometer required at least annually. not
conducted by the occupational hearing conservationist unless special
training has been completed
●● acoustic calibration system
Answer: Set of instruments that can measure sound outputs from an
audiometer and its earphones and confirm that the acoustic output of the
equipment meets requirements of established calibration standards
●● acoustic check
Answer: A term commonly used for checking the acoustic seal of an
earplug by cupping your hands firmly over the ears with the earplugs
inserted and then releasing. The acoustic check is most useful in the
presence of noise
,●● acoustic neuroma
Answer: Tumor of the eighth cranial nerve
●● acoustic trauma
Answer: Immediate, often permanent, hearing loss due to a very loud
event such as an explosion. Also called blast injury
●● action level (AL)
Answer: Time-weighted average exposure (85 dBA in the US) at which
employers must institute continuing, effective hearing conservation
programs
●● active hearing protection devices
Answer: Hearing protection devices that generate a signal that cancels
certain incoming sounds. Also called noise-cancelling hearing protectors
●● administrative control
Answer: Any administrative action, such as rotating workers to quiet
areas for a certain amount of time, to limit their overall exposure
●● adverse effect
Answer: Undesirable or detrimental side effect
,●● age correction
Answer: A calculated allowance for hearing loss due to age based on the
theroy that, because the worker aged between the baseline and annual
audiogram, a portion of the hearing loss was due to the natural aging
process
●● air-bone gap
Answer: The difference between the thresholds for hearing when the
tones are delivered by air conduction versus bone conduction
●● air-conduction
Answer: Sound energy travelling through the air into the ear canal, and
through the middle ear
●● ambient noise
Answer: Background sound pressure level at a specific location. Often
used as a reference level to study a new noise source. Also called
background noise
●● American Academy of Audiology (AAA)
Answer: A national professional organization that represents
audiologists. It provides professional development, research, and
increased public awareness of hearing and balance disorders
, ●● American Academy of Otolaryngology - Head and Neck Surgery
(AAO-HNS)
Answer: A national professional organization representing physician
specialists who treat the ear, nose, throat and related structures of the
head and neck
●● American Association of Occupational Health Nurses (AAOHN)
Answer: The professional organization for occupational and
environmental health nursing which provides for and delivers health and
safety programs and services to workers, worker populations and
community groups.
●● American Board of Audiology (ABA)
Answer: An autonomous organization dedicated to enhancing audiologic
services to the public by promulgating universally recognized standards
in professional practice
●● American College of Occupational and Environmental Medicine
(ACOEM)
Answer: A national professional organization representing physicians
and other healthcare professionals specializing in the field of
occupational and environmental medicine
●● American Conference of Governmental Industrial Hygienists
(ACGIH)
